| /* Copyright (c) 2015, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #include <stdio.h> |
| |
| #include <algorithm> |
| |
| #include <openssl/cipher.h> |
| #include <openssl/cmac.h> |
| #include <openssl/mem.h> |
| |
| #include "../test/test_util.h" |
| |
| |
| static void dump(const uint8_t *got, const uint8_t *want, size_t len) { |
| hexdump(stderr, "got :", got, len); |
| hexdump(stderr, "want:", want, len); |
| fflush(stderr); |
| } |
| |
| static int test(const char *name, const uint8_t *key, size_t key_len, |
| const uint8_t *msg, size_t msg_len, const uint8_t *expected) { |
| uint8_t out[16]; |
| |
| if (!AES_CMAC(out, key, key_len, msg, msg_len)) { |
| fprintf(stderr, "%s: AES_CMAC failed\n", name); |
| return 0; |
| } |
| |
| if (CRYPTO_memcmp(out, expected, sizeof(out)) != 0) { |
| fprintf(stderr, "%s: CMAC result differs:\n", name); |
| dump(out, expected, sizeof(out)); |
| return 0; |
| } |
| |
| bssl::UniquePtr<CMAC_CTX> ctx(CMAC_CTX_new()); |
| if (!ctx || !CMAC_Init(ctx.get(), key, key_len, EVP_aes_128_cbc(), NULL)) { |
| fprintf(stderr, "%s: CMAC_Init failed.\n", name); |
| return 0; |
| } |
| |
| for (unsigned chunk_size = 1; chunk_size <= msg_len; chunk_size++) { |
| if (!CMAC_Reset(ctx.get())) { |
| fprintf(stderr, "%s/%u: CMAC_Reset failed.\n", name, chunk_size); |
| return 0; |
| } |
| |
| size_t done = 0; |
| while (done < msg_len) { |
| size_t todo = std::min(msg_len - done, static_cast<size_t>(chunk_size)); |
| if (!CMAC_Update(ctx.get(), msg + done, todo)) { |
| fprintf(stderr, "%s/%u: CMAC_Update failed.\n", name, chunk_size); |
| return 0; |
| } |
| |
| done += todo; |
| } |
| |
| size_t out_len; |
| if (!CMAC_Final(ctx.get(), out, &out_len)) { |
| fprintf(stderr, "%s/%u: CMAC_Final failed.\n", name, chunk_size); |
| return 0; |
| } |
| |
| if (out_len != sizeof(out)) { |
| fprintf(stderr, "%s/%u: incorrect out_len: %u.\n", name, chunk_size, |
| static_cast<unsigned>(out_len)); |
| return 0; |
| } |
| |
| if (CRYPTO_memcmp(out, expected, sizeof(out)) != 0) { |
| fprintf(stderr, "%s/%u: CMAC result differs:\n", name, chunk_size); |
| dump(out, expected, sizeof(out)); |
| return 0; |
| } |
| } |
| |
| return 1; |
| } |
| |
| static int rfc_4493_test_vectors(void) { |
| static const uint8_t kKey[16] = { |
| 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, |
| 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c, |
| }; |
| static const uint8_t kOut1[16] = { |
| 0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28, |
| 0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46, |
| }; |
| static const uint8_t kMsg2[] = { |
| 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, |
| 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| }; |
| static const uint8_t kOut2[16] = { |
| 0x07, 0x0a, 0x16, 0xb4, 0x6b, 0x4d, 0x41, 0x44, |
| 0xf7, 0x9b, 0xdd, 0x9d, 0xd0, 0x4a, 0x28, 0x7c, |
| }; |
| static const uint8_t kMsg3[] = { |
| 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, |
| 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, |
| 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, |
| }; |
| static const uint8_t kOut3[16] = { |
| 0xdf, 0xa6, 0x67, 0x47, 0xde, 0x9a, 0xe6, 0x30, |
| 0x30, 0xca, 0x32, 0x61, 0x14, 0x97, 0xc8, 0x27, |
| }; |
| static const uint8_t kMsg4[] = { |
| 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, |
| 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, |
| 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, |
| 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, |
| 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, |
| 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10, |
| }; |
| static const uint8_t kOut4[16] = { |
| 0x51, 0xf0, 0xbe, 0xbf, 0x7e, 0x3b, 0x9d, 0x92, |
| 0xfc, 0x49, 0x74, 0x17, 0x79, 0x36, 0x3c, 0xfe, |
| }; |
| |
| if (!test("RFC 4493 #1", kKey, sizeof(kKey), NULL, 0, kOut1) || |
| !test("RFC 4493 #2", kKey, sizeof(kKey), kMsg2, sizeof(kMsg2), kOut2) || |
| !test("RFC 4493 #3", kKey, sizeof(kKey), kMsg3, sizeof(kMsg3), kOut3) || |
| !test("RFC 4493 #4", kKey, sizeof(kKey), kMsg4, sizeof(kMsg4), kOut4)) { |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| int main(int argc, char **argv) { |
| if (!rfc_4493_test_vectors()) { |
| return 1; |
| } |
| |
| printf("PASS\n"); |
| return 0; |
| } |